Modules & VBA :: Check For Record Existence - Object Variable Or With Block Not Set Error

I have some code that will run if I am populating an empty table(no duplication's possible) but now I am trying to create a Sub to check for existence of a record and handling it going forward.

Anyways the big picture is looping through a text file and placing data where it needs to go. The code follows including some comments point to the issue.

Code:
Sub PutinNewTag(TableIn As String, Tagtype As String, textline As String)
Dim strSQL As String
Dim NameIn As String
Dim TagName As String
Dim Db As DAO.Database
Dim rstin As DAO.Recordset

[Code] ....